act of the U.S. Congress prohibiting any unauthorized individual from knowingly possessing a loaded or unsecured firearm at a place that the individual knows, or has reasonable cause to believe, is a school zone

applies to public, private, and parochialelementary schools and high schools

applies to non-private property within 1000 feet of schools

It provides that the states and their political subdivisions may issue licenses that exempt the licensed individuals from the prohibition.